Home / 66,822.24-100,242-20,079.84

Finding the Fourth Proportional to 66,822.24, 100,242 and 20,079.84

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Solution

The fourth proportional to 66,822.24, 100,242 and 20,079.84 is: 30,122.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,822.24 : 100,242 = 20,079.84 : x
  2. Step 2: Convert to fraction form
    66,822.24/100,242 = 20,079.84/x
  3. Step 3: Cross multiply
    66,822.24x = 100,242 × 20,079.84
  4. Step 4: Simplify right side
    66,822.24x = 2,012,843,321.28
  5. Step 5: Solve for x
    x = 2,012,843,321.28/66,822.24
  6. Step 6: Final answer
    x = 30,122.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.